After reading this article in Hackaday, I decided to give it a try...
Actually it is very easy.
Anyone with a little skill in merging two pictures can make it. As long as you don't cover more than 30% of the informational dots, of course!
Actually it is very easy.
Anyone with a little skill in merging two pictures can make it. As long as you don't cover more than 30% of the informational dots, of course!
This actually works, and points to this site, no surprises there...
Just a black variation of the above.
Have fun with QR!
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